You can use OR for the filters and below there are instructions on how this can be done.
1. Edit the leaderboard
When editing a leaderboard, once filters have been selected, it is possible to also add filter logic.
2. Add filter logic
Add the criteria you'd like to enter into the filter logic.
In the example above, the filter can be type A or B and occurs within the leaderboard duration. If this criteria is met, the achievement will be triggered. Brackets are used here to isolate the filter so that it's triggered based on being 1 or 2 as opposed to 2 and 3.